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TW200510737A - Touch detection for a digitizer - Google Patents

Touch detection for a digitizer

Info

Publication number
TW200510737A
TW200510737A TW093122071A TW93122071A TW200510737A TW 200510737 A TW200510737 A TW 200510737A TW 093122071 A TW093122071 A TW 093122071A TW 93122071 A TW93122071 A TW 93122071A TW 200510737 A TW200510737 A TW 200510737A
Authority
TW
Taiwan
Prior art keywords
sensing
digitizer
touch detection
detector
conductors
Prior art date
Application number
TW093122071A
Other languages
Chinese (zh)
Other versions
TWI288826B (en
Inventor
Haim Perski
Meir Morag
Original Assignee
N trig ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/757,489 external-priority patent/US7372455B2/en
Application filed by N trig ltd filed Critical N trig ltd
Publication of TW200510737A publication Critical patent/TW200510737A/en
Application granted granted Critical
Publication of TWI288826B publication Critical patent/TWI288826B/en

Links

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Position Input By Displaying (AREA)

Abstract

A detector for detecting touches by fingers or like body parts on a sensor comprises at least one sensing conductor, typically a grid of such conductors, extending into the sensor, a source of oscillating electrical energy at a predetermined frequency, and detection circuitry for detecting a capacitive influence on the sensing conductor when said oscillating electrical energy is applied, the capacitive influence being interpreted as a touch. The detector is advantageous in that the same sensing conductors can be used both for touch sensing and for detection of an electromagnetic stylus.
TW093122071A 2003-09-05 2004-07-23 Touch detection for a digitizer TWI288826B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US50148403P 2003-09-05 2003-09-05
US10/757,489 US7372455B2 (en) 2003-02-10 2004-01-15 Touch detection for a digitizer
PCT/IL2004/000045 WO2004070396A2 (en) 2003-02-10 2004-01-15 Touch detection for a digitizer

Publications (2)

Publication Number Publication Date
TW200510737A true TW200510737A (en) 2005-03-16
TWI288826B TWI288826B (en) 2007-10-21

Family

ID=39228468

Family Applications (1)

Application Number Title Priority Date Filing Date
TW093122071A TWI288826B (en) 2003-09-05 2004-07-23 Touch detection for a digitizer

Country Status (1)

Country Link
TW (1) TWI288826B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI414981B (en) * 2009-10-09 2013-11-11 Egalax Empia Technology Inc Method and device for dual-differential sensing

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI383158B (en) * 2008-09-05 2013-01-21 Holtek Semiconductor Inc Capacitance measurement circuit and method
TWI410847B (en) * 2009-03-25 2013-10-01 Holtek Semiconductor Inc Compensation method for touch panel system
TWI428661B (en) 2009-11-09 2014-03-01 Silicon Integrated Sys Corp Touch display apparatus
KR101391243B1 (en) * 2012-07-17 2014-05-02 삼성디스플레이 주식회사 display device having touch sensing function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI414981B (en) * 2009-10-09 2013-11-11 Egalax Empia Technology Inc Method and device for dual-differential sensing
TWI464634B (en) * 2009-10-09 2014-12-11 Egalax Empia Technology Inc Method and device for dual-differential sensing

Also Published As

Publication number Publication date
TWI288826B (en) 2007-10-21

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Legal Events

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MK4A Expiration of patent term of an invention patent